What Clutch to get????

[gtune4]

What is the best clutch to get for a street application under 350hp?I have heard good things about exedy clutch, but the clamping force is only 2000lb.

[:: orion ::]

SR or KA?

I like the ACT Street clutch - Rated at 276, but it's been proven to +400rwhp and torque on the KA...

Later - Brian

[pball]

I have an ACT race clutch, its really sweet. Rated to 372ft-lb, probably can handle much more. The street has the same pressure plate, so it should hold as stiff. The race disc is a lot harsher, but if youre good at the clutch its worth it.

[240sxJay]

Oddly i've been reading up on a clutch today, and the ACT (Advance clutch technology) seems to be most often suggested. I have a question though. Which I will probably post in another section...I'm thinking of switching motors to ...yes...you guessed it SR20DET, BUT if someone can suggest things i can do with my KA14 I'd rather do that. only 80k miles on it :P and if i DO switch motors is it neccesary to change the clutch?!?

[gtune4]

personally i would change motorsI have just recently burned up the clutch that came with my sr from japan, so every websites suggestion to change the clutch when you do the swap is accurate. keeping the ka, i would have to say it would cost more for the same power and reliability of the sr.

[gtune4]

how long have you guys had your act clutches?

[:: orion ::]

i would have to say it would cost more for the same power and reliability of the sr.

[I can't hold back]

Oh no...

SR @ 13-14psi makes ~250rwhp, costs $2500-3000.

My KA-T @ 8psi makes ~250rwhp, cost $2500.

It's just as reliable, cost is similar...

Don't believe the hype!!!

[:: orion ::]

I've had my ACT for ~40,000 miles, +2 years, and I auto-x A LOT and do any road course event I can, as well as some drag for fun.

Holds up very well...

Later - Brian

[240sxJay]

Someone who backed up KA engines...woot! I will be adding this ACT clutch and changing the flywheel very soon. (Week or so) I"ll post the difference up. I have a stock s14 engine. I would like to hear tips or from people who build on the S14 engine. I know this isn't the place to post but i can't post a new topic in the KA24E forum

[matt147]

I have an ACT street setup with about 30k miles in my NX and its been pretty good but it has a high pedal effort. I almost ordererd an ACT street for my S13 but saw some posts about SPEC clutches. People seem to like them and they are supposed to have a lighter pedal then the ACT. I ordered the stage 2 this week and I have my fingers crossed that I will like it.

[gtune4]

my sr cost alot more than 2500.the payment was for reliability, revability, and kicka$$ability. this might not be your case, but if you were to by a chassis with no engine, for the same price, the sr will be quicker. in reality you may be right. as far as already having the ka motor and not counting that in the cost, you could build more power for less money. if i was to take my sr, and put the cost of the motor worth of upgrades, no question i would have more power.

thanks for all the clutch advice.

[D-UNIT]

I got a clutch masters stage 3. Normal pedal feel. About 50,000 miles on it now. btw I drag race every other weekend, and it still chirps fourth gear doing 60 on the freeway.

[pball]

The main reason I got an ACT, all of 300 miles ago, was that they were the only company I could find that offered solid "race" discs. Street discs are two-piece affairs with a rotating hub and some springs to soak up the shock if you shift rough - the 6-puck race disc is just a piece of steel with a splined hub and six metallic pads. Check the ACT site for pics. It doesnt sound like much of a difference, especially if youve played with a street pad and see how tight the springs are, but its really noticeable when you get it in, the throttle response becomes almost telepathic - literally the tiniest perceptible movement of my foot blips the tach. Oh, and the ACT race discs use 100% sintered copper-ceramic pads, which I know no street discs use (semi-metallic was the best I could find) - they can soak up and dissipate something like 4x the heat of organic full-circle discs, but grab a LOT sharper. Pedal feel with the Heavy-Duty pressure plate (weakest of the 3) is a little harder, but not really stiffer or more difficult, just firmer and crisper. Like I said before, its a very harsh clutch (disc) that has the potential to break things in the drivetrain if you dont know what youre doing, but when you hit a shift right...oh man...

[gtune4]

act installed(street mod dsk-hd pressplate)not too bad. 5.5k launch at 11.7lbs not too shabby!

[pball]

Have you had the clutch long enough to break it in? If you're doing drops at 5.5k on a disc with less than ~500 miles, you're just asking to trash it...

ps. the race disc 0wns j00, should have gotten one :P

[gtune4]

in the kit the paper said to break in 200-300miles. I haven't done it more than twice w/250 on it.

[pball]

Yeah, my kit had the paper too, but I like to be extra careful with high-buck parts like that. Can you slip the street discs to break them in? That worked *great* with my disc (with 200 miles, it's all broken in), I don't know if you can do it with the non-racers though.

[gtune4]

thanks for the advice.ill be nicer to it for now on.

[gtune4]

Now that I have been running the clutch, it still works great. The only thing is that it seems to make noise when rpms are changing and the c.pedal is moved. The guy at nissan listend to it and said it "I wouldn't worry about it." Is this normal with the ACT street/strip mod clutch?

[pball]

Mine does that sometimes - I think it's the disc slipping; it's a grinding sound just like copper-ceramic pads rubbing against cast iron would make. I haven't had any problems yet (at about 4000 miles), in fact, mine seems to be grabbing better with more wear. Can't say for sure about the street plate, but it does sound perfectly normal.

[Jookmasta]

ACT all the way. i have the street one with the HD pressure plate and maybe im just heman, but the clutch isnt stiff enuff for me. if i could do it over, i would get the 6 puck cuz thats not as bad as a 4 puck. but thats just me. ACT is the way to go tho. chirps in third at 50. cant ask for much more

[pball]

The 6-puck isn't any stiffer than the street disc if you have the same pressure plate - if you want stiffer, get an XXtreme Max pressure plate with a 6-puck, it's rated to like 688 ft-lbs. Or you could rig up a smaller slave cylinder, or modify the pedal linkage, if you get good performance and just want a stiffer pedal feel.